Tracing: Add string unit to trace search results to prevent Infinity bug (#48206) (#48270)

(cherry picked from commit 4e6c3be7ab)

Co-authored-by: Connor Lindsey <cblindsey3@gmail.com>

public/app/plugins/datasource/jaeger/responseTransform.ts

@@ -71,6 +71,7 @@ export function createTableFrame(data: TraceResponse[], instanceSettings: DataSo
         name: 'traceID',
         type: FieldType.string,
         config: {
+          unit: 'string',
           displayNameFromDS: 'Trace ID',
           links: [
             {

public/app/plugins/datasource/tempo/resultTransformer.test.ts

@@ -102,6 +102,9 @@ describe('createTableFrameFromSearch()', () => {
     expect(frame.fields[0].name).toBe('traceID');
     expect(frame.fields[0].values.get(0)).toBe('e641dcac1c3a0565');
 
+    // TraceID must have unit = 'string' to prevent the ID from rendering as Infinity
+    expect(frame.fields[0].config.unit).toBe('string');
+
     expect(frame.fields[1].name).toBe('traceName');
     expect(frame.fields[1].values.get(0)).toBe('c10d7ca4e3a00354 ');
 

public/app/plugins/datasource/tempo/resultTransformer.ts

@@ -600,6 +600,7 @@ export function createTableFrameFromSearch(data: SearchResponse[], instanceSetti
         name: 'traceID',
         type: FieldType.string,
         config: {
+          unit: 'string',
           displayNameFromDS: 'Trace ID',
           links: [
             {